FI84009B - AGGREGAT Foer KVISTNING AV TRAEDSTAMMAR. - Google Patents

AGGREGAT Foer KVISTNING AV TRAEDSTAMMAR. Download PDF

Info

Publication number
FI84009B
FI84009B FI871596A FI871596A FI84009B FI 84009 B FI84009 B FI 84009B FI 871596 A FI871596 A FI 871596A FI 871596 A FI871596 A FI 871596A FI 84009 B FI84009 B FI 84009B
Authority
FI
Finland
Prior art keywords
pruning
tree trunk
feed
away
trunk
Prior art date
Application number
FI871596A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI84009C (en
FI871596A (en
FI871596A0 (en
Inventor
Torsten Forslund
Original Assignee
Oesa Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to SE8601629 priority Critical
Priority to SE8601629A priority patent/SE463250B/en
Application filed by Oesa Ab filed Critical Oesa Ab
Publication of FI871596A0 publication Critical patent/FI871596A0/en
Publication of FI871596A publication Critical patent/FI871596A/en
Publication of FI84009B publication Critical patent/FI84009B/en
Application granted granted Critical
Publication of FI84009C publication Critical patent/FI84009C/en

Links

Classifications

    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01GHORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G23/00Forestry
    • A01G23/02Transplanting, uprooting, felling or delimbing trees
    • A01G23/095Delimbers

Description

84009
The present invention relates to a tree trunk pruning machine comprising at least two pruning blades or devices which are movable towards each other and 5 apart and two feed units which are likewise movable towards and away from each other and which feed a single tree trunk in the longitudinal pruning direction. 10 towards and away from each other and thus towards and away from the tree trunk, and wherein each individual pruning device is connected to the respective feed unit to move with it towards and away from the tree trunk.
15 Pruning machines such as those mentioned above are commonly used in single-handed harvesters which cut, prune and cut trees to a suitable length in mechanized forestry, whether for young felling or 20 final felling. Some of the previously known single-lever harvesters have used the so-called a chest portion that is placed against the trunk of a growing tree, after which a plurality of gripping arms articulated, curved, or grapple to the chest are pivoted against the tree trunk 25 for gripping and attachment thereto. The feed units are generally rollers with spikes attached to a pivoting chest and which, after cutting the wood, are turned against the tree trunk like pruning devices for pruning. Because the diameter of the trees can vary greatly in size (the diameter of the trunk of small trees can be about 40 mm and the thickness of the thickest trees more than 400 mm) and the diameter of the trunk changes from base to end in one and the same tree, pruning equipment and feed rollers are formed. The trajectories of the -35 chamfered against the body are relatively complex as the body continuously rests on the chest and thus the center of the body moves away from or approaches the chest depending on the diameter variation. As a result, the suspensions of the feed rollers and the pruning devices become practically very complex and expensive, in addition to which the striking angles of the pruning devices are not always ideal and the pruning resistance is thus often extremely high.
SE Publication No. 8 105 907-3 discloses an additional single-lever logging device comprising two tine rollers mounted on arms which may be provided with pruning devices and which can be moved away from each other and towards each other not only by turning around joints or shafts but also by moving in a straight line so that said pivot axes can be moved closer to or farther apart. In this construction, however, the spike rollers are fixedly mounted on the respective pivot arms, in particular on their axes of rotation, which si-20 are located in planes perpendicular to the pivot or articulation axes of the arms. Since the spike rollers feeding the tree trunk are fixedly attached to the swivel arms in this way, they may become insufficient in their function if there is a high pruning resistance. In this case, pruning devices permanently mounted on the arms and located at a certain distance from the spike rollers in the feed direction may collide with unevenness or protrusion in the frame, e.g. somewhat thinner than the bulge point that the qualifiers hit. This can easily result in the pruning equipment getting stuck and the spike rollers starting to slip.
The object of the present invention is to eliminate the above-mentioned drawbacks 84009 3 and to provide a pruning machine for wood harvesting machines, in particular with a single lever principle, which is simple in construction and prunes the branches efficiently and with the least possible pruning resistance. This and other objects are achieved according to the main features of the invention in that each feed unit comprises an endless chain assembled from a plurality of articulated chain links moving along the outer edge or circumference of an elongate, form-rigid run-10 test element and substantially pressing against the body member. distributed compression pressure to the tree trunk over substantially the entire length of the trunk member, and that each pruning device is mounted on at least one arm articulated or pivotally attached to a supporting base of said trunk member through a hinge in the same plane as it, so that the point of articulation at which the arm turns about 20 ka is also substantially in the same plane as said part of the chain, disposed substantially on the extension of the contact surface between a portion of the feed chain and the tree trunk to ensure that a force is applied to the branch substantially parallel to the tree trunk feed when the pruning device strikes it and allows the pruning device to follow irregularities in the tree trunk regardless of the feed unit.
Fig. 1 of the drawings is a partially simplified perspective view 30 showing a single-lever logging machine incorporating a pruning machine according to the invention.
Fig. 2 shows a bottom plan view of the logging machine according to Fig. 1 at the time of pruning the tree trunk.
4 84009
Fig. 3 is an enlarged perspective view showing the structure of a feed unit belonging to a pruning machine according to the invention.
Figures 4 and 5 are exploded views showing two different embodiments of the loop belonging to the feed unit according to Figure 3.
Fig. 6 is an exploded view showing the stand of the feed unit.
Figures 1 and 2 show a logging machine operating on the single lever principle 10 with a feed device consisting of two separate feed units 1, 1 '. These feed units have their own bases, generally indicated by reference numerals 2, 2 ', which are pivotally mounted via joints 3, 3' in their entirety in a press marked 15, which in the example described comprises three tubes 6 telescopically movable relative to each other by hydraulic cylinder 5. , 6 ', 6 ", of which the first, thickest tube 6 is suspended on a rotator 7, which in turn can be connected in a known manner to the free end of the crane boom 20 (not shown). In the illustrated example, the rotator 7 is mounted on a mounting plate 8 with two downwardly facing lugs to which the telescopic tube 6 is attached by means of joints 9 in the projections of the tube, whereby the tube 6 and with it the clamp 4 25 as a whole can be turned at least 90 ° from the position shown in Fig. 1, in which the feed units 1, 1 'are substantially horizontal, to a position substantially vertically.This the pivoting movement is provided by a hydraulic cylinder 10, one end of which is fixed to the plate 30 8 and the other end of which is fixed to a grapple 11 rigidly fixed by a spacer 12 (see also Figure 2) fax-skooppiputkeen 6. The tubes 6, 6 ', 6 "mobility allows the supply units 1, 1' to move toward and away from each other by the double arrow A direction against and 84009 35 thereof is compressed between the trunk 13 5 correspond to releasing it.
The grapple 11 comprises, in a manner known per se, a gripping arm 14 movable by a hydraulic cylinder, which moves with respect to a fixed arm 14 'consisting of two separate arm parts 15, 16, between which the arm 14 can fit. By turning the arm 14 against the arm 14 ', the desired tree can be grasped and locked in place. Mounted below the grapple 11 is a cutting device 17, which can advantageously consist of a pivotally movable chain saw, with which the wood locked in place can be cut at its base in a known manner.
The stand 2 of the feed unit 1 is pivotally suspended at the free ends of two curved brackets 18, 18 'and the brackets 18, 18' are mounted at the free end of the movable telescopic tube 6 "and ensure that the feed unit 1 can be brought close to the feed unit 1 'when The second stand 2 'is pivotally suspended by two relatively short supports 19, 19' which are fixedly connected to the telescopic tube 20.
Referring now to Figures 3 to 6, which show the feed unit 1 in detail, this unit includes an elongate, shape-rigid body member 20 having a plurality of articulated links 21, 22 along its circumference, which together form a chain surrounding the body member, generally labeled by reference numeral 23. The element 20 consists of a relatively thin piece of plate, the outer edge of which protrudes between separate guide flanges or parts present in at least some of the loops. The first embodiment of the loop shown in Figure 4 comprises two separate, supporting plates 24, 24 ', each having two holes 25, 25' for the pivots 26 intended to connect the loops to each other. The plates 24, 24 'are rigidly connected to each other by a transverse body 27 having two threaded holes 27' 6 84009 and serving as a mounting base for the detachable crank member. Figure 4 shows three variations of such a crank member, the first 28 of which is a rectangular, uniformly thick 5 rubber plate or the like which can be fixed to the base 27 by screws 29. It should be noted that both the transverse piece 27 and the crank member 28 are considerably longer than the plate piece 20. wherein the chain of loops is relatively wide. The crank member 30 is also formed of a rubber plate, but its outer surface is concave when the outer surface of the crank member 28 is flat. The handle member 31, in turn, consists of a plate profile of angular cross-section, firstly with a flange 32 to be placed against the base 27 and secondly with a flange 33 bent at an acute angle thereto, the free end of which is ground obliquely at 34 and more precisely at right angles to the flange 32. This forms a sharp edge that is able to adhere to the bark.
The second embodiment of the loop 22 shown in Fig. 5 comprises four separate, preferably thin plates 35, 35 'and 36, 36', which are likewise connected to each other by a transverse body 27 to which said loop is attached. vääntiöelin. The two inner plates 35, 35 'extend inwards slightly further than the plates 36, 36' and form projections 37 which act as guide flanges which enclose the outer edge of the plate body 20.
In order to reduce the frictional resistance between the plate body 20 and the loops 21, 22 as they run along the circumference of the plate body, the loops are provided with tread rollers or 30 1 discs 38. These are preferably mounted around a pin 26 connecting two adjacent loops, bearing a bearing between the tread roller and the pivot pin 39.
As can be seen from Figure 6, the base, indicated by the number 2, is formed as a whole, supporting 35 individual feed units 1, an upper part 40 and a lower part 84009 7 41, the latter having a hydraulic motor 42 and a drive shaft 43 rotated by the lower part 41. The lower part 41 includes a cantilevered support plate 44 20 can be fastened by a clamping plate 5 45 in the upper part 40. A drive wheel 46 is arranged at one end of the plate piece 20, which is connected to the drive shaft 43 by means of a wedge 47. The total thickness of the drive wheel 46 does not substantially exceed the total thickness of the plate piece 20 and this is realized by assembling the wheel from two separate plates 10 48, 48 'connected to each other by a central hub 49 fitted in a notch bounded by two fork-shaped prongs 20 in the thinned part 50. The drive wheel 46 has a plurality, in this case four, of projections 51 with curved notches 52 between them. The projections are arranged to engage between adjacent pivot pins of the chain, in particular between running rollers 38 fitted to pivot pins, whereby rounded notches 52 press against a round perimeter. In order for the wheel to be easily detached from the running rollers 20 38, the notches 52 are slightly larger in diameter than the rollers. In order for the chain to work properly in use, there are an odd number of pivots, as can be seen from Figure 3. This is achieved by a special loop 22 'consisting of half two thick plates 24 and half 25 of four thin plates 35, 36.
The feed units 1, 1 'shown in Figures 1 and 2 are arranged to operate together not only so that they can be moved towards and away from each other by means of the press 4, but also so that the hydraulic motors 42 driving the chains are connected in series or in parallel with distribution valves, hydraulic motors absolutely produce the same feed rate for both chains. This means that the second feed unit cannot slip if its adhesion to the tree trunk is temporarily lost.
8 84009
The logging device shown in Figures 1 and 2 further comprises two pruning devices 53, 53 'which form curved, fixed knives. The knife 53 is suspended by a support arm consisting of two plates 54, 55 connected to each other at the front end of the feed unit 1 by an end plate 56. At their rear ends the plates 54, 55 are suspended by joints 57 on a base 2. As best seen in Figure 2, there is a lower joint 57 fitted to the free end of the support plate 58 below. Arranged in the bar 55 of the bar-10 is a stop formed by a protrusion cooperating with a mating pin 59 'projecting from the support plate 58, more specifically so that the mating pin ensures that the support arm of the bar irons 54, 55 cannot turn longer than in the figure. 2 to the position shown. From this inner end position, the arm can be turned outwards at least some distance while the pruning knife 53 moves away from the tree trunk, which is fed through the harvester.
Similarly, a pruning knife 53 'is suspended from a support arm consisting of two separate flat irons 54', 55 '.
Each support arm further has two curved or swatting promotion devices 60, 61 and 60 ', 61', which is pivotally mounted at 25 and which move toward and away from each other by the double arrow B direction. The claws 60, 61 are mounted on shafts 62 interposed between two separate plates 63, 64, the latter of which is attached to the end plate 56 by a tubular body 65 which may include a hydraulic motor for rotating the shaft 62. In order to provide synchronous movement on the nails 60, 61, they are connected to each other, e.g. by teeth 66. The nails 60 ', 61' are also mounted as shown.
The pruning knife 53 'is arranged on the extension tube 67 35 so as to be located somewhat further away than the knife 53. When the knives 53, 53' are thus located at different points in the longitudinal direction, the first knife into the branches of the twig layer decreases considerably before compared to 5 knives being in the same plane.
The bases are attached to the upper flat irons or stem portions 54, 54 'of the invars by curved beams 68, 68' which act as detents when the harvester is placed against the tree trunk. Due to their curved shape, these beams cause the feed units 10, 1 'to settle at the center line of the tree trunk, regardless of whether the tree trunk is thin or thick.
In order to make the pruning knives 53, 53 'flexible, the against the tree trunk, each is supported by a power unit or spring device 69, 69 '(e.g. 15 hydraulic cylinder or gas spring) of the support arm, which in the described example is arranged between the retaining beams 68 and the extensions of the supports 18', 19 'supporting the stands 2. In this way, the devices 69, 69 'hold the pruning knives securely but resiliently against the tree trunk, so that they can accommodate possible irregularities in the tree trunk due to their inversion.
When it is desired to place the harvesting device described above around a growing tree, the press 4 is turned by means of a cylinder 10 to a position in which the two elongate feed units 1, 1 'are substantially vertical. In addition, the feed units are clearly separated by pushing the telescopic tubes 6 ', 6 "out of the tube 6 by means of a cylinder 5. Furthermore, the nails 60, 61 and 60', 61 are also turned to their outermost end positions, allowing the tree trunk 30 to pass them. that this presses from above against both retainers 68, 68 'and on the other hand against the inside of the grapple 11, after which the movable arms 14 of the grapple are pressed against the frame, whereby the frame can be firmly locked at 35.
When the body is locked in the grapple 11, the feed units can be moved in a common plane towards each other so that they press against the opposite sides of the body, and the transfer takes place by pulling the telescopic tubes together by means of the cylinder 5. The pruning nails 60, 61 and 60 ', 61 are also folded in and pressed against the surface of the frame, after which the frame is fed through the harvester by moving the chains 23 of each feed unit in the direction of the arrows shown in Fig. 10. Both pruning knives 53, 53 'cut or otherwise remove branches from the tree with the rotating pruning devices 60, 61, 60 ", 61' during this feeding.
Because the feed units move as described in the common plane toward and away from each other together with the associated pruning devices, they are self-centering, thus avoiding the complex trajectories of the feeding units and the pruning devices. In addition, the pruning knives 53, 53 'always hit the branches in the ideal direction 20, since the pruning blades and the associated support arms 54, 55 are located on their halves in the same plane as the parts of the feed unit chains which rest against the frame. Due to the fact that the pruning devices located at a certain distance from the feeding units are mounted on arms which can turn relative to the feeding units, and the pruning devices are flexibly pressed against the tree trunk, they are able to accommodate any irregularities in the trunk without getting stuck. In the same way, the feed units are also able to accommodate the irregularities of the frame 30 due to being pivotally suspended from the rest of the machine. The feed unit shown in Figures 3-6 can be made quite small in size and nevertheless high feed forces are applied to the tree trunk while the torques of the drive shafts remain relatively small when the the torque radii are small and the compression pressure of the crank members 84009 11 is evenly distributed over the entire length of the feed unit due to the fact that the crank members and loops can rest on the plate piece 20 along its entire length. Since the attachments of the feed units in the joints 3, 3 'are located in the immediate vicinity of the surface of the tree trunk when the units are pressed against the frame, there is no tendency for the feed units to rise even with the greatest traction, such as conventional bogie structures.
It is clear that the invention is not limited only to the embodiment described and shown in the figures. Thus, it is possible to use the pruning machine consisting of the feed units 1 and the pruning devices 53 in other ways than in a wood harvesting machine operating on the single-arm principle, e.g. a two-arm harvesting machine. In addition, the press moving the feed units towards and away from each other can be constructed in other ways than from the telescopic tubes shown in the drawings. Similarly, other types of feed units than those shown in Figures 3-6 may be used, although they are considered to be preferred in practice. Although the motor 42 is located in the lower part 41 of the stand 2 in Fig. 6, it can just as well be mounted in the upper part of the stand as shown in Fig. 1.

Claims (5)

    12 84009
  1. A tree trunk pruning machine comprising at least two pruning blades or devices (53, 53 ') movable towards and away from each other and two feed units (1, 1') which are likewise movable towards and away from each other and which feed a single tree trunk ( 13) longitudinally past the pruning devices during pruning, wherein the feed units (1, 1 ') 10 are movable towards and away from each other and thus towards and away from the tree trunk, and wherein each individual pruning device (53, 53') is connected to the respective feed unit (1, 1 ') to move with it towards and away from the tree trunk, characterized in that each feed unit (1, 1') comprises an endless chain assembled from a plurality of articulated chain links (21, 22) moving in an elongate, form-rigid manner. along the outer edge or circumference of the body element (20) and which, when pressed against the body element 2 0 apply a substantially evenly distributed compression pressure to the tree trunk over substantially the entire length of the trunk member, and that each pruning device (53, 53 ') is mounted on at least one arm (54, 55) articulated or pivotally attached to said trunk member 25 (20). support arm (2) via a joint (57) and which arm (54, 55) is arranged substantially parallel to the elongate part of the supply chain (23) which presses against the tree trunk, or in the same plane as it, so that the articulation point (57) around which the pivot pivot is located substantially in the same plane as said part of the chain, whereby the pruning device is located substantially on the extension of the contact surface between the supply chain part and the tree trunk, thus ensuring that the force is applied to the branch substantially parallel to the tree trunk feed and the pruning device 8400 can follow the unevenness in the tree trunk regardless of the feed unit concerned.
  2. Pruning machine according to claim 1, characterized in that the pruning device preferably consists of a curved knife (53, 53 ') fixedly connected to the support arm (54, 55), and in that said arm supports this main pruning knife (53, 53'). in addition, two auxiliary pruning devices (60, 61, 60 ', 61') pivotally mounted relative to the shaft, and likewise curved, for the purpose of resiliently pressing against those parts of the body half which the fixed knife does not extend.
  3. Pruning machine according to Claim 2, characterized in that the knives (53, 53 ') are arranged at different points in the feed direction of the tree trunk so that they hit the branches belonging to the same branch layer at different times during pruning.
  4. Pruning machine according to one of the preceding claims, characterized in that the support arm (54, 55) cooperates with a stop (59, 59 ') which prevents the pruning knives (53) from entering inwards past the end position located between the feed chain and the tree trunk. and that a force or spring device (69) is connected to the support arm, which continuously tends to move the knife towards said end position 25 and against the effect of which the knife can turn outwards from its inner end position.
  5. Pruning machine according to one of the preceding claims, characterized in that each feed unit (1, 1 ') is pivotally suspended from the rest of the machine 30, in particular from a joint (3, 3') located in the immediate vicinity of the plane defined by and against the tree trunk. based on the contact surface between the depressive feed unit. 14 84009
FI871596A 1986-04-11 1987-04-10 AGGREGAT Foer KVISTNING AV TRAEDSTAMMAR. FI84009C (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE8601629 1986-04-11
SE8601629A SE463250B (en) 1986-04-11 1986-04-11 AGGREGAT FOR THE TREATMENT OF TREES

Publications (4)

Publication Number Publication Date
FI871596A0 FI871596A0 (en) 1987-04-10
FI871596A FI871596A (en) 1987-10-12
FI84009B true FI84009B (en) 1991-06-28
FI84009C FI84009C (en) 1991-10-10

Family

ID=20364140

Family Applications (1)

Application Number Title Priority Date Filing Date
FI871596A FI84009C (en) 1986-04-11 1987-04-10 AGGREGAT Foer KVISTNING AV TRAEDSTAMMAR.

Country Status (9)

Country Link
US (1) US4766939A (en)
AT (1) AT397487B (en)
AU (1) AU595302B2 (en)
CA (1) CA1283026C (en)
DE (1) DE3712302A1 (en)
FI (1) FI84009C (en)
FR (1) FR2596948B1 (en)
NO (1) NO161422C (en)
SE (1) SE463250B (en)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3094106A (en) * 1960-04-12 1963-06-18 North American Aviation Inc Liquid metal level gauge
SE463139B (en) * 1986-04-11 1990-10-15 Oesa Ab FEATURING DEVICE FOR ASTAD ACHIEVEMENT OF A LONG-TERM RELATED RELATIONSHIP BETWEEN A TREAD AND THE SELF DEVICE
AT389486B (en) * 1988-07-06 1989-12-11 Steyr Daimler Puch Ag DEVICE FOR PRUNING TREE TRUNKS
AT389485B (en) * 1988-07-06 1989-12-11 Steyr Daimler Puch Ag Device for branching and cutting to tree trunks
AT396771B (en) * 1989-02-27 1993-11-25 Propst Johann Ing Device for deliberating tree trunks
SE463591B (en) * 1989-05-24 1990-12-17 Skogsjan Invest Ab DEVICE FOR FEEDING OF LONG-TERM FOOD
FI84128C (en) * 1989-05-31 1991-10-25 Lauri Kalervo Ketonen Gripharvester.
US4899794A (en) * 1989-06-22 1990-02-13 Hamby Jr Thomas E Tree delimbing device with self-aligning cutter head
AT397177B (en) * 1990-07-10 1994-02-25 Konrad Josef Device for harvesting and processing, example for pruning trees
US5515895A (en) * 1995-03-07 1996-05-14 Hamby, Jr.; Thomas E. Tree delimbling device with self-aligning cutter head assembly
DE29506409U1 (en) * 1995-04-13 1995-06-08 Henning Peter Device with a motorized chainsaw for pruning and felling trees
NZ286314A (en) * 1995-05-25 1998-07-28 Machinery Dev Co Pty Ltd Feed roller for compressive removal of bark from a felled tree comprising a base portion and projecting engaging means in a generally helical arrangement
AU734231B2 (en) * 1995-05-25 2001-06-07 Machinery Development Company Pty. Ltd. Workhead with jaw assembly for timber processing
US5954105A (en) * 1996-05-24 1999-09-21 Smith; Dennis William Workhead for timber processing
CA2162183C (en) * 1995-11-06 1998-08-11 Aloysius Kingston Tree processor attachment for log porters
US5709254A (en) * 1996-06-18 1998-01-20 Argue; Fletcher Tree harvesting apparatus
US5704407A (en) * 1996-09-16 1998-01-06 Hamby, Jr.; Thomas E. Tree delimbing device
FI104800B2 (en) * 1998-02-24 2003-11-14 Ponsse Oy Feed Roller
US6155317A (en) * 1999-12-10 2000-12-05 Seymour; Kerry Richard Mechanical pull-through delimbing device
US6488063B2 (en) 2000-11-29 2002-12-03 Riley Manufacturing, Inc. Delimbing device and methods
US6484769B2 (en) 2000-11-29 2002-11-26 Kerry Seymour Delimbing device and methods
US6431232B1 (en) 2001-03-08 2002-08-13 Kerry Seymour Delimber
US6962178B2 (en) * 2003-05-29 2005-11-08 Alain Duval Tree processor
US9370142B2 (en) * 2012-06-27 2016-06-21 Thomas K. Barnhill Remote-controlled vertical ascending and descending workstation
DE102014100054B4 (en) * 2014-01-06 2015-10-08 Petra Jordan Device for relieving living trees
CN109179235B (en) * 2018-08-17 2020-09-08 上海宇航系统工程研究所 Special-shaped chain clamping rope climbing device

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE352836B (en) * 1967-06-20 1973-01-15 Kockum Soederhamn Ab
CA860080A (en) * 1968-01-29 1971-01-05 Benedetto Domenico Modified processor and components
US3797539A (en) * 1971-09-30 1974-03-19 Caterpillar Tractor Co Pulpwood harvester
US3981336A (en) * 1972-06-06 1976-09-21 L & L Logging Research Limited Tree harvester
CA1033271A (en) * 1976-02-04 1978-06-20 Lajoie Enterprises Ltd. Tree processing head
DK162131C (en) * 1977-03-18 1992-02-17 Jan Eriksson Application for treatment of tree trees
DE2720149A1 (en) * 1977-05-05 1978-11-16 Hermann Priester De-branching implement for living trees - has support frame gripping tree trunk which is advanced by drive and cut by cutting chain
SU891029A1 (en) * 1980-04-07 1981-12-23 Ленинградская Ордена Ленина Лесотехническая Академия Им.С.М.Кирова Device for cutting logs to standard length
SE437145C (en) * 1981-10-07 1986-08-12 Jan Eriksson DEVICE OR TREATMENT TREATMENT DEVICE
SU1021614A1 (en) * 1982-02-08 1983-06-07 Красноярский Филиал Всесоюзного Научно-Исследовательского Института Строительного И Дорожного Машиностроения Foresting machine
EP0096146A1 (en) * 1982-06-09 1983-12-21 Erik Persson Grapple harvester
DE3408089C2 (en) * 1984-03-05 1988-01-21 Olavi Luode Fi Kuusilinna
FI69233C (en) * 1984-05-29 1986-01-10 Lauri Ketonen Foundation material
SE463139B (en) * 1986-04-11 1990-10-15 Oesa Ab FEATURING DEVICE FOR ASTAD ACHIEVEMENT OF A LONG-TERM RELATED RELATIONSHIP BETWEEN A TREAD AND THE SELF DEVICE

Also Published As

Publication number Publication date
FR2596948A1 (en) 1987-10-16
FI84009C (en) 1991-10-10
AU595302B2 (en) 1990-03-29
SE463250B (en) 1990-10-29
SE8601629L (en) 1987-10-12
US4766939A (en) 1988-08-30
FI871596D0 (en)
DE3712302A1 (en) 1987-10-15
NO871390D0 (en) 1987-04-03
AT397487B (en) 1994-04-25
NO871390L (en) 1987-10-12
ATA90887A (en) 1993-09-15
FI871596A0 (en) 1987-04-10
CA1283026C (en) 1991-04-16
NO161422B (en) 1989-05-08
FI871596A (en) 1987-10-12
SE8601629D0 (en) 1986-04-11
NO161422C (en) 1989-08-23
AU7137987A (en) 1987-10-15
FR2596948B1 (en) 1991-07-19

Similar Documents

Publication Publication Date Title
FI84009B (en) AGGREGAT Foer KVISTNING AV TRAEDSTAMMAR.
US4194542A (en) Device in an apparatus for processing trees
US4742854A (en) Feeding device for effecting a longitudinally directed relative movement between a stem and the device proper
EP0318406B1 (en) Espalier machine for vine or other plants or saplings and clasp being used by that machine
EP0312126A1 (en) Cutting device for use in agriculture, viticulture and arboriculture
US4718816A (en) Load handling attachment for vehicles
US3074446A (en) Machine for harvesting trees
EP0428530B1 (en) Forest harvester
US4974648A (en) Implement for lopping felled trees
US6250056B1 (en) Rotary blade pruning machine
GB2154846A (en) Tree harvesting device
CN110169278A (en) A kind of shaddock trunk bark blazer
US4781228A (en) Tree pruner
CA2052896A1 (en) Tree cutting apparatus
FI108394B (en) Forestry pruning and felling blade
US4004622A (en) Harvester processor assembly
FI84702C (en) Feeding device for effecting longitudinal relative movement between a tree trunk and the device itself
CA2158611C (en) Method and apparatus for lifting balled and burlapped trees
US5322102A (en) Pruning apparatus having a helical cutting head
US4242796A (en) Tree saw
US4850409A (en) Felling saw and method of operating
US5699712A (en) Rotatable side saw for tree processing apparatus
US6167926B1 (en) Self-aligning delimbing apparatus
US4665961A (en) Machine for limbing trees arranged in bundles, especially small trees
USRE29235E (en) Multiple tree harvester of the flexible arm type

Legal Events

Date Code Title Description
FG Patent granted

Owner name: ÖSA AB

MA Patent expired